Of course, there are significant downsides to this in comparison to Rhystic Study, as their should be (drawing is one thing that is unmistakably blue, after all)
These only accept that you put real cards in your deck
No more cross-referencing set symbols or squinting at edition markers
For example, here are some Commander Classic prices: Farseek - 1.99 - heavily printed and common Rhystic Study - 37.99 - common in initial set, heavily printed Dockside Extortionist - 64.99 - Rare in a few sets Sun Titan - 0.75 - Heavily printed as mythic and rare See how a rare Commander Classic Sun Titan is massively cheaper than Farseek which is a common
This color indicator can't be affected by text-changing effects (such as the one created by Crystal Spray), although color-changing effects can still overwrite it
The reason that this card is so broken, is that Ultimate Conductor Tyranno can attack multiple times per turn and can beat over almost anything that it attacks so it will activate the effect multiple times to potentially draw a ton of cards and gain a ton of lp.